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formal grammar updates [backport:1.2] (#18803)

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Andreas Rumpf 2021-09-04 19:52:57 +02:00 • committed by GitHub
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3 changed files with 40 additions and 48 deletions
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tools/grammar_nanny.nim
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@ -13,6 +13,7 @@ proc checkGrammarFileImpl(cache: IdentCache, config: ConfigRef) =
var stream = llStreamOpen(data)
var declaredSyms = initHashSet[string]()
var usedSyms = initHashSet[string]()
usedSyms.incl "module" # 'module' is the start rule.
if stream != nil:
declaredSyms.incl "section" # special case for 'section(RULE)' in the grammar
var